abstract class Super {
  int get extendedConcreteGetter => 0;
  int get extendedAbstractGetter;
  int get extendedConcreteImplementedGetter => 0;
  int get extendedAbstractImplementedGetter;
  int get extendedConcreteImplementedMultipleGetter => 0;
  int get extendedAbstractImplementedMultipleGetter;
}

class Interface1 {
  int get extendedConcreteImplementedGetter => 0;
  int get extendedAbstractImplementedGetter => 0;
  int get extendedConcreteImplementedMultipleGetter => 0;
  int get extendedAbstractImplementedMultipleGetter => 0;
}

class Interface2 {
  int get extendedConcreteImplementedMultipleGetter => 0;
  int get extendedAbstractImplementedMultipleGetter => 0;
}

abstract class AbstractClass extends Super implements Interface1, Interface2 {}

class ConcreteSub extends AbstractClass {}

class ConcreteClass extends Super implements Interface1, Interface2 {}

main() {}